Drag scraper and excavator.



Patented Mar. 5, hilii 2 SHEETS-SHELT 1.

Fluuanhu ArIhur'A. Charbundaux (1H0: nc 1.

A. A CHARBONDAUX.

DRAG SCRAPER AND EXCAVATOR APPLICATWN mm UEC.18.i9lb

1 ,258,090. Patented Mar. 5, Riki 2 SHEETS 'SHEET 2.

UNITED STATES PATENT OFFICEo ARTHUR A. CHARBOLlTDAUX, 0F SPOKANE, WASHINGTON.

DRAG SCRAPER AND EXCAVATOR.

Application filed December 18. 1916.

u To all whom, it may concern:

B0 11 known that I, An'ruUR A. Guam back-haul line as, by so doing, the apparatus may be controlled with greater facility and convenience and by a single operator.

' A further object resides in the provision of a novel device of the foregoing character of extremely simple and comparatively inex ensive construction which will accom- PllSll the work for which it is adapted in an eflicient and expeditious manner.

Generally speaking, my invention comprises an inclined scraper supporting cable,

a scraper carriage haul line, a scraper adjusting line, and winding drumsfor the control of the cable and lines.

The various elements of the complete organization will be hereinafter more fully pointed out and described in detail in connection with the accompanying drawings, in which- Figure 1 is a side elevation of the entire apparatus set up for operation and showing the relative arrangement of the parts.

Fig. 2 is a side elevation of the power structure on' an enlarged scale, illustrating in detail the cable, lines and tackle thereon.

Fig. 3 is a greatly enlarged view in side elevation showing the scraper carriage, scraper, cable and lines, and Fig. 4 is a rear end'view of the carriage and scraper.

Referring more specifically to the drawings in which like mfcrcnce characters are used to indicate like parts in .lhc several views, the numeral 1 designates a tower-like snpporling struclz e. i\ carriage supporting cable 2 which adapted to be suspended above finnrea to lN' r-xrvnulcd, has one end scrum-(l in lllrbugl the lower at 3 said mild" i\lll| llll,. upward and passing over rlnmun: miun pulleys i and A lock and Specification of Letters Patent.

Patented Mar. 5, 1918.

Serial No. 137.599.

tackle 6 and a power windin drum 7 are adapted to cooperate with sald cable 2 to slacken or tighten the latter at the will of the operator. The opposite end of the cable is anchored at 8 in any suitable manner but in a plane below that of the pulleys 4 and 5 in order to provide the required incline of the cable.

The scraper carriage 9 is of rectan lar form and consists of two similar frame ody members 10 and 11, said carriage being supported upon the cable 2 by the grooved wheels 12 which are disposed between said members and mounted thereon. A scraper or scoop 13 is pivotally mounted at 14 on the pair of depending arms 15 which are adjustably secured for vertical adjustment to the carriage frame members by means of the slots 16 andbolts 17.

The scraper is provided with a bail 18 to which is attached one end of the scraper adjusting line 19 which passes overa pulley 20 mounted on the carriage frame. Said line xtends slantwise up over the grooved wheel 21 mounted at the top of the tower 1, its opposite end being securedto a winding drum 22. i

A haul line 23 is attached to the carriage at 24 and this line also extends u wardly at an angle over the grooved whee 25 and on to winding drum 26. Power for operating the several drums is transmitted 1n the usual manner from an engine 27 or other power plant.

operation is neccmary when it is desired to scoop up a considerable bite at a given place. in the same operation the cable 2 is paid out so as to lower the scoop and its carriage bodily so that the scoop or scraper edge will sulTii-icnllv engage' the earth. Then. when (he buclu-t is filled by drawing in on the line 23 the adjusting line 19 is shortened so as to raise the scraper edge and then the receptacle is raisedbodil and perpendicularly by taking up theta 1e 2.

Ordinarily, however, the scraper is simply, lowered to engage the ground by slackin cable -2= and the carriage drawn forwar The dumping is, of course, accomplished by paying out the scraper adjusting line 19 when the receptacle reaches the proper point. Returntrayel of the carriage is expedited upon increasin the degree of slant of the supporting cahi e by shortening the same.

While I have described and illustrated only one embodiment of my invention, it is to be understood that I do not limit myself to the specific construction set forth but, on the other hand hereb expressly reserve the patent right to ma e various chan es therein, as long as in so doing, I do not epart from the spirit and scope of the invention as defined in the appended claim.

Having described and explained my invention, its construction, operation, and advantages, I claim as new and desire to secure by Letters Patent of the United States The combination in an excavating apparatus including a supporting cable, of a carriage thereon comprising a pair of spaced frame members and a pair of rear, slotted, arms adjustably secured thereto, a scraper located below the carriage and hinged at the lower ends of these arms, a guide pulley at the front of the carriage and an adjusting line passed over said pulley and attached to the scraper, and a single haul line attached to the frame.

In testimony whereof I aflix my signature.

ARTHUR A. CHARBONDAUX. 

